[Snyk] Security upgrade grpc from 1.13.0 to 1.24.4

[9rb]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • o2r/package.json
  • o2r/package-lock.json
  • o2r/.snyk

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	482/1000 Why? Proof of Concept exploit, CVSS 7.5	Prototype Pollution SNYK-JS-GRPC-598671	No	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

With a Snyk patch:

Severity	Priority Score (*)	Issue	Exploit Maturity
	636/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 6.3	Prototype Pollution SNYK-JS-LODASH-567746	Proof of Concept
	399/1000 Why? Has a fix available, CVSS 3.7	Regular Expression Denial of Service (ReDoS) npm:mime:20170907	No Known Exploit
	589/1000 Why? Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) npm:negotiator:20160616	No Known Exploit
	539/1000 Why? Has a fix available, CVSS 6.5	Denial of Service (DoS) npm:qs:20140806-1	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the effected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

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